Alloy of copper



UNrrED STATES PATENT OFFICE.

DUANE H. CHURCH, or NEWTON, MASSACHUSETTS.

ALLOY OF COPPER, NICKEL, AND GOLD.

SPECIFICATION forming part. of Letters Patent No. 385,909. dated July 10, 1888. Application tiled September 28, 1857. Serial No. 250,030. (No spccimens.l

A compound metal thus constituted is very fine-grained, strong, and malleable, so as to be readily worked, and of a shade closely resembling that of silver, is susceptible of a high polish, and nonoxidizahle and highly attractive in appearance. It may be employed in a variety of ways in the industrial and useful arts.

\Vhat I claim is- An alloy or compound metal composed of copper, nickel, and gold, in the proportions of fifty to seventy-five parts of copper, fifteen to forty parts of nickel, and ten to thirty-live My improved alloy con. 'sts of a compound parts of gold, as hereinbefore set forth. of copper, nickel, and gold, in the proportion I In testimony whereof Ihavesigncd my name of lift y to seventy-five parts of copper, fifteen to thisspccifieatiomin the presence of twosubto forty parts of nickel, and ten to tliirlyfive scribing witnesses, this 27th day of September,

To all whom it may concern:

lie it known that l, DUANE If. CHURCH, of Newton, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Alloys of Copper, Nickel, and (lold, of which the following is a specification.

My invention has relation to alloys or compound metals, and has for its object to pro duco such a metal which shall be susceptible of a very high polish, he non-oxidimble, and highly attractive in appearance, as also useful for a variety of purposes. 1

parts of gold. A. D. 1887.

I have found that the proportions of fifty parts of copper, fifteen parts of nickel, and ten DUANE IL CHURCH. parts of gold give good results, though the proportions maybe varied \vilhin thelimits above \Vitnesscs:

noted without materially affecting or changing ARTHUR \V. GROSSLEY,

the characteristics of the alloy. A. l). I-IARRIsON. 

